SS-30 SASI Interface 5MB Hard Drive

In 1982 I had the opportunity to design a hard disk interface for use with
SWTPC 6800 and 6809 Computer Systems. The drives were to be the new 5 1/4 inch
Seagate Technology ST506 style (MFM) and the computer interface was to use the
Shugart Associates System Interface (SASI). SASI became the SCSI standard that
is still used today.